Question of the Week Responses: DS vs PSP Revisited
3DS vs PSP – VGChartz Gap Charts – October 2018 Update
Who won? First-week sales of PS Vita vs. PSP vs. 3DS vs. DS (infographic) | VentureBeat
Sony PSP Versus Nintendo DS - The Sales Showdown - Pure Nintendo
Semi-Annual Financial Results Briefing for Fiscal Year Ending March 2012
Report: PSP game sales robust, DS sales amazing | Ars Technica
Switch vs DS – VGChartz Gap Charts – October 2017 Update
PS Vita being outsold by the PSP in Europe too | eTeknix
Hand to hand combat: Nintendo 3DS vs PlayStation Vita
Sony PSP Versus Nintendo DS - The Sales Showdown - Pure Nintendo
DS Lite vs. PSP: who has the best picture quality? | Engadget
Nintendo Didn't Expect 3DS Sales to Drop Like This | WIRED
Games: Nintendo – the winner takes it all – eurotechnology.com
PSP and DS sales running close to even in Japan – Destructoid
Analysis: PSP Go To Face 'Slow Death At Retail' In U.S.?
Apple slams PSP, DS at iPhone/iPod conference - GameSpot
PlayStation Portable | Video Game Sales Wiki | Fandom
Wii, XBox, PS3, Nintendo DS, Gameboy Advance, PSP, iPhone, iPad: global market share and sales comparison | Got Schwartz?
Nintendo vs Sony: Who's winning the console war in handheld gaming? | IG Bank Switzerland
Nintendo's Switch to Success: 20 Years of Nintendo Console Sales
Sony PSP vs. Nintendo DS - IGN
PlayStation Portable - Wikipedia
Nintendo DS vs. The Sony PSP - InfiniGEEK
